JPS56154605A - Measuring method and device for mesh image density or mesh area rate - Google Patents

Measuring method and device for mesh image density or mesh area rate

Info

Publication number
JPS56154605A
JPS56154605A JP5708380A JP5708380A JPS56154605A JP S56154605 A JPS56154605 A JP S56154605A JP 5708380 A JP5708380 A JP 5708380A JP 5708380 A JP5708380 A JP 5708380A JP S56154605 A JPS56154605 A JP S56154605A
Authority
JP
Japan
Prior art keywords
light
mesh
aperture
measuring method
image density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5708380A
Other languages
Japanese (ja)
Other versions
JPS6127684B2 (en
Inventor
Taku Sakamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Priority to JP5708380A priority Critical patent/JPS56154605A/en
Priority to GB8113161A priority patent/GB2075187B/en
Priority to US06/258,899 priority patent/US4473298A/en
Priority to FR8108649A priority patent/FR2481799A1/en
Priority to DE19813117337 priority patent/DE3117337A1/en
Publication of JPS56154605A publication Critical patent/JPS56154605A/en
Publication of JPS6127684B2 publication Critical patent/JPS6127684B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

PURPOSE: To measure a mean mesh transmissivity or reflexibility with high reliability, by a method wherein an aperture diameter, which is constant-fold as large as that of a screen pitch and is not larger so much than that of the screen pitch, is selected.
CONSTITUTION: A condenser lens 2 collects light from a light source 1, and a uniform light amount at a measured surface, which is determined by an aperture 3, is obtained. The light transmits through an object 4 to be measured, and light, which is attenuated according to the transmissivity of the object 4 to be measured, is sent to a light-receiving part. The light-receiving part collects only light at a given area determined by the apperture 3, and is inputted to a photoelectric transducing element 9 via a condenser lens 7 and a filter 8. The diameter of the aperture 3 is selected such that it is constant-fold as large as that of a screen pitch and is not so
COPYRIGHT: (C)1981,JPO&Japio
JP5708380A 1980-05-01 1980-05-01 Measuring method and device for mesh image density or mesh area rate Granted JPS56154605A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP5708380A JPS56154605A (en) 1980-05-01 1980-05-01 Measuring method and device for mesh image density or mesh area rate
GB8113161A GB2075187B (en) 1980-05-01 1981-04-29 Measuring halftone dot area rate
US06/258,899 US4473298A (en) 1980-05-01 1981-04-30 Method for measuring a halftone dot area rate or a halftone picture density
FR8108649A FR2481799A1 (en) 1980-05-01 1981-04-30 METHOD AND DEVICE FOR MEASURING THE PERCENTAGE OF THE DARK OR LIGHT PARTS BY A SURFACE UNIT, OF HALF TINT POINTS OF AN IMAGE
DE19813117337 DE3117337A1 (en) 1980-05-01 1981-05-02 Method and device for measuring a raster point area fraction or a raster image density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5708380A JPS56154605A (en) 1980-05-01 1980-05-01 Measuring method and device for mesh image density or mesh area rate

Publications (2)

Publication Number Publication Date
JPS56154605A true JPS56154605A (en) 1981-11-30
JPS6127684B2 JPS6127684B2 (en) 1986-06-26

Family

ID=13045583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5708380A Granted JPS56154605A (en) 1980-05-01 1980-05-01 Measuring method and device for mesh image density or mesh area rate

Country Status (5)

Country Link
US (1) US4473298A (en)
JP (1) JPS56154605A (en)
DE (1) DE3117337A1 (en)
FR (1) FR2481799A1 (en)
GB (1) GB2075187B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223707A (en) * 1982-05-29 1983-12-26 ハイデルベルガ−・ドルツクマシ−ネン・アクチエンゲゼルシヤフト Method of obtaining net-point area ratio of original plate or plate for printer
JP2010262012A (en) * 2009-04-30 2010-11-18 Panasonic Corp Method for measuring area ratio of printing plate pattern
CN108088402A (en) * 2017-12-18 2018-05-29 东莞捷邦实业有限公司 Detection method of the speaker based on CCD vision-based detections with grenadine foam component

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK552983A (en) * 1983-12-01 1985-06-02 Eskofot As METHOD OF REFLECTING MEASURING RELATIONSHIP BETWEEN BLACKED AREA AND BLACKED AREA
DE3855086T2 (en) * 1987-05-06 1996-07-25 Fuji Photo Film Co Ltd Density measurement device and its use
US4937637A (en) * 1989-02-10 1990-06-26 Kollmorgen Corporation Dual reading head transmission/reflection densitometer
NL8901722A (en) * 1989-07-06 1991-02-01 Oce Nederland Bv DEVICE FOR MEASURING LIGHT SCATTERED BY AN INFORMATION CARRIER
US6024020A (en) * 1996-08-21 2000-02-15 Agfa Corporation Fluorescence dot area meter for measuring the halftone dot area on a printing plate
JP2000037936A (en) * 1998-07-21 2000-02-08 Canon Inc Method for aligning printing position, and printing apparatus
US8014024B2 (en) * 2005-03-02 2011-09-06 Xerox Corporation Gray balance for a printing system of multiple marking engines
US8203768B2 (en) * 2005-06-30 2012-06-19 Xerox Corporaiton Method and system for processing scanned patches for use in imaging device calibration
US8259369B2 (en) 2005-06-30 2012-09-04 Xerox Corporation Color characterization or calibration targets with noise-dependent patch size or number
US7719716B2 (en) * 2005-11-04 2010-05-18 Xerox Corporation Scanner characterization for printer calibration
US8711435B2 (en) * 2005-11-04 2014-04-29 Xerox Corporation Method for correcting integrating cavity effect for calibration and/or characterization targets
US7826090B2 (en) * 2005-12-21 2010-11-02 Xerox Corporation Method and apparatus for multiple printer calibration using compromise aim
US8102564B2 (en) * 2005-12-22 2012-01-24 Xerox Corporation Method and system for color correction using both spatial correction and printer calibration techniques

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053181A (en) * 1958-10-30 1962-09-11 Lithographic Technical Foundat Method for controlling print quality for lithographic presses
US3393602A (en) * 1963-11-22 1968-07-23 David S. Stouffer Light density scanning device
US3375751A (en) * 1964-03-16 1968-04-02 Barnes Eng Co Negative and print densitometer
FR2224749A1 (en) * 1973-04-06 1974-10-31 Exaphot Sarl Measurement of screened image dot density - direct and indirect illumination, dot viewed from other side
US4264210A (en) * 1977-09-13 1981-04-28 Dai Nippon Insatsu Kabushiki Kaisha Dot percentage measuring device
US4371265A (en) * 1977-09-13 1983-02-01 Dai Nippon Insatsu Kabushiki Kaisha Dot percentage measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223707A (en) * 1982-05-29 1983-12-26 ハイデルベルガ−・ドルツクマシ−ネン・アクチエンゲゼルシヤフト Method of obtaining net-point area ratio of original plate or plate for printer
JPH0429965B2 (en) * 1982-05-29 1992-05-20
JP2010262012A (en) * 2009-04-30 2010-11-18 Panasonic Corp Method for measuring area ratio of printing plate pattern
CN108088402A (en) * 2017-12-18 2018-05-29 东莞捷邦实业有限公司 Detection method of the speaker based on CCD vision-based detections with grenadine foam component

Also Published As

Publication number Publication date
FR2481799A1 (en) 1981-11-06
GB2075187A (en) 1981-11-11
JPS6127684B2 (en) 1986-06-26
GB2075187B (en) 1984-05-31
FR2481799B1 (en) 1984-06-29
DE3117337C2 (en) 1992-12-24
US4473298A (en) 1984-09-25
DE3117337A1 (en) 1982-03-25

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